Sash-holder



(ModeL) W. C. OARSDN. sAsH HOLDER.

Patented Aug. 1, 1882.,

Y 17;- Wmewew UNITED STATES PATENT OFFICE.

WILLIAM C. CARSON, OF DENTON, TEXAS.

SASH-HOLDER.

SPECIFICATION forming part of Letters Iatent No. 261,998, dated August 1, 1882.

Application filed April It), 1882. (ModeL) To all whom "it may concern:

Be it known that I, WILLIAM G. CARSON, of Denton, in the county of Denton and State of Texas, have invented a new and Improved Window-Lock, of which the following is afull, clear, and exact description.

This invention relates to that class of devices linown as window-sash locks; and the -on line y 3 Fig. 3 is a cross-section on line as qty-Figs. 4, 5, and 6, details in plan and perspective to show the construction of the locking-plate, frame, and locking-block.

The frame A, which is suitably provided with screw-holes for attaching it to the sash, has at its ends the upwardly-projecting ears or flanges a, in the inner face of each of which is suitable provision-as by grooves or recesses a, open from the bottom-for the journals 1) of the revolving cylinder or locking-block B to be placed in. In the surface of this block is the spiral groove 11, and into this groove 12, when the several parts are put together, [its the upwardly-projecting and central stud, c, of the sliding plate 0. This block can be worked by means of handle b The plate ,0 is adapted to slide in or out of the underside of the frame A, guided between its sides when actuated by the movement of the block B, the action of groove 1) on the stud c causing the said plate to move in or out, according as the block is actuated. The plate 0 has on its outer end the head .0, of proper size and shape, and provided on its face with corrugations or points a, which, when G is thrust outward, as

above described, will take upon the sides of the frame inwhich the window-sash is mounted, and thus retain'the sash at any desired position. The plate 0 comes directly under the block 13, and the stud c is centrally fixed on v the plate. Thus the spiral groove will give to the plate a direct and positive thrust forward or back when the block is actuated, as above erted without any danger of doing damage to the device.

This device is very easily made, and the parts are readily adapted to each other, and when put together and the frame secured to the window-sash, which is done by merely screwing it upon the sash and without inortising or injuring the sash, the deviceis ready for use. It is so simple that it cannot easily get out of order, and it is very strong and durable.

Having thus described my invention, what I consider new, and desire to secure by Letters Patent, is-

In a window-sash lock, the combination of the following elements, viz: a revolving locking-block spirally grooved on its face, and

mounted centrally in a frame having'seats or I spur on said plate, said spur coming directly under said block, all as set forth.

WM. (1- CARSON. Witnesses:

G. S. WAINWRIGHT, (J. M. GREENLEE. 

